With security I dont mean password or addon informations.
Your site delivers a file that will be opened and placed in a "predictable" path.
So if someone manages to break into your site or injects malicious code this could offer possibilities for an attack. Unlikely, I know ... but worth mentioning I thought

Using this logic, WoWInterface should be under the same suspicion.

EDIT (Cause of Vlad, dammit)
There's no reason not to trust WoWInterface as the staff do a great job.

__________________All I see is strobe lights blinding me in my hindsight.